/* welcome 欢迎页 */
.welcome-info2 {
    top: 20%;
    width: 100%;
    position: relative;
    text-align: center;
}

.welcome-info2 > a {
    width: 250px;
    height: 30px;
    margin: 3% auto;
    background-color: rgba(99, 161, 243, 0.8);
    border: rgba(99, 161, 243, 0.8) solid 2px;
    border-radius: 20px;
    display: block;
    position: relative;
    text-decoration: none;
    transition: 0.5s;
    opacity: 0;
    -webkit-animation: welcome-btn 2s forwards 2.2s linear;
    -o-animation: welcome-btn 2s forwards 2.2s linear;
    animation: welcome-btn 2s forwards 2.2s linear;
}

@keyframes welcome-btn {
    0% {
        opacity: 0;
        bottom: -600px;
    }
    50% {
        bottom: 0;
    }
    100% {
        opacity: 1;
        bottom: -30%;
    }
}

.welcome-info2 > a > span {
    color: #FFFFFF;
    font-size: 18px;
    font-weight: bold;
    line-height: 30px;
    text-align: center;
    display: inline-block;
}


.welcome-info2 > a:hover {
    box-shadow: 0 5px 5px 0 rgba(0x5d, 0x82, 0xbe, .25);
    transition: all .2s ease-in-out;
}